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Chemical Properties of Actinium and Hafnium


Chemical Properties of Hafnium and Actinium


Chemical Properties

Chemical Formula
Ac   
Hf   

Isotopes
  
  

Known Isotopes
29   
10
32   
7

Electronegativity
  
  

Pauling Electronegativity
1.10   
99+
1.30   
32

Allred Rochow Electronegativity
1.00   
36
1.23   
25

Allen Electronegativity
Not Available   
1.16   
37

Electropositivity
  
  

Pauling Electropositivity
2.90   
10
2.70   
22

Ionization Energies
  
  

1st Energy Level
499.00 kJ/mol   
99+
658.50 kJ/mol   
40

2nd Energy Level
1,170.00 kJ/mol   
99+
1,440.00 kJ/mol   
99+

3rd Energy Level
1,900.00 kJ/mol   
99+
2,250.00 kJ/mol   
99+

4th Energy Level
4,700.00 kJ/mol   
23
3,216.00 kJ/mol   
99+

Electrochemical Equivalent
2.82 g/amp-hr   
18
1.66 g/amp-hr   
99+

Electron Work Function
Not Available   
3.90 eV   
27

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   

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